OTC:CYAN | Historical Stock Price | CYANOTECH CORP

Complete retained daily price history on its own workbook tab. Split-adjusted close keeps every historical share price on one comparable split basis. Cumulative dividend-reinvested close is the daily close of a rebased total-return index: it starts with one share at the earliest retained close, reinvests every distribution, and normalizes every forward and reverse split exactly once. Admitted exchange opening prices remain a distinct current-session series.

Available history
1991-05-21 to 2026-08-27
Data captured

Stock Price Chart

Blue: Split-adjusted close · Orange: Cumulative dividend-reinvested close

$0.23$0.69$2.06$6.21$18.69$56.241991-05-212026-08-27

Logarithmic scale. Both lines share the same starting value for the selected range.

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Historical Stock Price — 2024

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volume
2024-12-31$0.36$0.3637,100
2024-12-30$0.37$0.373,400
2024-12-27$0.38$0.383,700
2024-12-26$0.38$0.381,300
2024-12-24$0.38$0.38500
2024-12-23$0.40$0.4014,900
2024-12-20$0.30$0.3022,500
2024-12-19$0.40$0.4018,900
2024-12-18$0.44$0.4431,600
2024-12-17$0.44$0.44309,900
2024-12-16$0.34$0.3431,800
2024-12-13$0.29$0.294,000
2024-12-12$0.26$0.26600
2024-12-11$0.35$0.3529,600
2024-12-10$0.30$0.3028,500
2024-12-09$0.29$0.2912,100
2024-12-06$0.29$0.29500
2024-12-05$0.32$0.325,700
2024-12-04$0.37$0.37900
2024-12-03$0.35$0.35800
2024-12-02$0.34$0.341,900
2024-11-29$0.35$0.356,200
2024-11-27$0.36$0.368,600
2024-11-26$0.35$0.351,800
2024-11-25$0.34$0.344,900
2024-11-22$0.38$0.383,000
2024-11-21$0.37$0.37800
2024-11-20$0.35$0.35400
2024-11-19$0.38$0.3812,900
2024-11-18$0.40$0.401,500
2024-11-15$0.34$0.3470,200
2024-11-14$0.52$0.525,100
2024-11-13$0.52$0.52500
2024-11-12$0.52$0.52900
2024-11-11$0.55$0.551,000
2024-11-08$0.60$0.600
2024-11-07$0.60$0.607,700
2024-11-06$0.65$0.650
2024-11-05$0.65$0.658,800
2024-11-04$0.56$0.561,100
2024-11-01$0.57$0.573,700
2024-10-31$0.63$0.631,600
2024-10-30$0.61$0.611,500
2024-10-29$0.76$0.76300
2024-10-28$0.60$0.603,600
2024-10-25$0.76$0.767,100
2024-10-24$0.78$0.780
2024-10-23$0.78$0.783,000
2024-10-22$0.59$0.59200
2024-10-21$0.65$0.65300
2024-10-18$0.65$0.650
2024-10-17$0.65$0.65200
2024-10-16$0.70$0.700
2024-10-15$0.70$0.70100
2024-10-14$0.70$0.701,400
2024-10-11$0.70$0.704,100
2024-10-10$0.80$0.800
2024-10-09$0.80$0.801,100
2024-10-08$0.73$0.730
2024-10-07$0.73$0.738,000
2024-10-04$0.67$0.671,000
2024-10-03$0.67$0.6718,700
2024-10-02$0.79$0.7912,900
2024-10-01$0.76$0.765,000
2024-09-30$0.76$0.766,200
2024-09-27$0.70$0.7014,500
2024-09-26$0.77$0.775,500
2024-09-25$0.70$0.7012,800
2024-09-24$0.70$0.7011,200
2024-09-23$0.70$0.7013,800
2024-09-20$0.70$0.7014,000
2024-09-19$0.74$0.746,200
2024-09-18$0.70$0.709,200
2024-09-17$0.70$0.7025,000
2024-09-16$0.82$0.825,400
2024-09-13$0.69$0.698,400
2024-09-12$0.74$0.746,000
2024-09-11$0.74$0.7416,200
2024-09-10$0.75$0.758,000
2024-09-09$0.75$0.7515,000
2024-09-06$0.73$0.735,800
2024-09-05$0.79$0.795,500
2024-09-04$0.78$0.7821,100
2024-09-03$0.79$0.798,200
2024-08-30$0.78$0.7820,500
2024-08-29$0.71$0.717,800
2024-08-28$0.79$0.799,300
2024-08-27$0.71$0.718,600
2024-08-26$0.64$0.648,700
2024-08-23$0.82$0.826,000
2024-08-22$0.76$0.767,900
2024-08-21$0.75$0.7510,100
2024-08-20$0.61$0.6128,000
2024-08-19$0.68$0.6835,500
2024-08-16$0.70$0.7027,900
2024-08-15$0.69$0.696,400
2024-08-14$0.69$0.699,100
2024-08-13$0.65$0.6519,000
2024-08-12$0.75$0.756,000
2024-08-09$0.68$0.688,000
2024-08-08$0.71$0.7119,200
2024-08-07$0.72$0.7242,200
2024-08-06$0.72$0.727,500
2024-08-05$0.75$0.7514,700
2024-08-02$0.75$0.755,100
2024-08-01$0.70$0.7011,000
2024-07-31$0.70$0.7011,100
2024-07-30$0.70$0.7021,700
2024-07-29$0.56$0.5623,500
2024-07-26$0.55$0.5511,100
2024-07-25$0.59$0.5910,600
2024-07-24$0.59$0.5915,100
2024-07-23$0.57$0.5714,500
2024-07-22$0.51$0.5114,200
2024-07-19$0.58$0.587,800
2024-07-18$0.58$0.587,900
2024-07-17$0.54$0.5413,600
2024-07-16$0.34$0.3411,400
2024-07-15$0.43$0.4319,400
2024-07-12$0.46$0.468,500
2024-07-11$0.45$0.4539,600
2024-07-10$0.33$0.3311,200
2024-07-09$0.39$0.3912,500
2024-07-08$0.38$0.3811,100
2024-07-05$0.40$0.405,200
2024-07-03$0.37$0.3710,000
2024-07-02$0.35$0.354,500
2024-07-01$0.33$0.336,400
2024-06-28$0.33$0.332,000
2024-06-27$0.39$0.394,400
2024-06-26$0.33$0.3323,700
2024-06-25$0.27$0.27400
2024-06-24$0.27$0.27100
2024-06-21$0.28$0.2814,200
2024-06-20$0.30$0.301,700
2024-06-18$0.31$0.311,400
2024-06-17$0.31$0.31100
2024-06-14$0.30$0.309,200
2024-06-13$0.30$0.30100
2024-06-12$0.31$0.311,200
2024-06-11$0.30$0.301,600
2024-06-10$0.34$0.342,800
2024-06-07$0.38$0.380
2024-06-06$0.38$0.380
2024-06-05$0.38$0.38500
2024-06-04$0.38$0.386,700
2024-06-03$0.38$0.38800
2024-05-31$0.31$0.3119,900
2024-05-30$0.30$0.30300
2024-05-29$0.29$0.29200
2024-05-28$0.28$0.28100
2024-05-24$0.28$0.28100
2024-05-23$0.28$0.280
2024-05-22$0.28$0.28400
2024-05-21$0.30$0.305,100
2024-05-20$0.35$0.351,000
2024-05-17$0.30$0.30200
2024-05-16$0.30$0.30300
2024-05-15$0.30$0.30300
2024-05-14$0.29$0.290
2024-05-13$0.29$0.290
2024-05-10$0.29$0.29200
2024-05-09$0.34$0.341,000
2024-05-08$0.29$0.290
2024-05-07$0.29$0.291,000
2024-05-06$0.31$0.31200
2024-05-03$0.29$0.291,000
2024-05-02$0.30$0.300
2024-05-01$0.30$0.30500
2024-04-30$0.46$0.460
2024-04-29$0.46$0.463,200
2024-04-26$0.30$0.30500
2024-04-25$0.30$0.300
2024-04-24$0.30$0.300
2024-04-23$0.30$0.300
2024-04-22$0.30$0.30700
2024-04-19$0.35$0.35200
2024-04-18$0.33$0.330
2024-04-17$0.33$0.330
2024-04-16$0.33$0.330
2024-04-15$0.33$0.330
2024-04-12$0.33$0.330
2024-04-11$0.33$0.33100
2024-04-10$0.33$0.3338,300
2024-04-09$0.35$0.352,700
2024-04-08$0.40$0.403,200
2024-04-05$0.29$0.2921,300
2024-04-04$0.35$0.3521,800
2024-04-03$0.45$0.45900
2024-04-02$0.30$0.302,200
2024-04-01$0.29$0.29900
2024-03-28$0.29$0.29300
2024-03-27$0.29$0.290
2024-03-26$0.29$0.290
2024-03-25$0.29$0.292,100
2024-03-22$0.29$0.291,400
2024-03-21$0.34$0.345,200
2024-03-20$0.29$0.290
2024-03-19$0.29$0.291,400
2024-03-18$0.29$0.291,700
2024-03-15$0.29$0.2924,300
2024-03-14$0.31$0.31200
2024-03-13$0.31$0.31500
2024-03-12$0.31$0.310
2024-03-11$0.31$0.313,700
2024-03-08$0.36$0.36600
2024-03-07$0.31$0.31600
2024-03-06$0.31$0.31900
2024-03-05$0.31$0.3110,600
2024-03-04$0.30$0.30400
2024-03-01$0.28$0.289,800
2024-02-29$0.30$0.3024,300
2024-02-28$0.33$0.3337,600
2024-02-27$0.31$0.3144,600
2024-02-26$0.30$0.3031,700
2024-02-23$0.24$0.247,200
2024-02-22$0.24$0.24204,500
2024-02-21$0.21$0.21101,000
2024-02-20$0.26$0.26150,600
2024-02-16$0.44$0.44141,800
2024-02-15$0.45$0.45291,400
2024-02-14$0.57$0.5745,800
2024-02-13$0.56$0.5610,300
2024-02-12$0.57$0.5733,900
2024-02-09$0.57$0.5761,300
2024-02-08$0.67$0.6785,000
2024-02-07$0.72$0.721,200
2024-02-06$0.75$0.758,200
2024-02-05$0.77$0.7713,100
2024-02-02$0.77$0.772,600
2024-02-01$0.77$0.7711,200
2024-01-31$0.77$0.7738,300
2024-01-30$0.88$0.881,800
2024-01-29$0.85$0.8517,100
2024-01-26$0.87$0.878,900
2024-01-25$0.87$0.878,800
2024-01-24$0.89$0.893,700
2024-01-23$0.94$0.941,200
2024-01-22$0.89$0.893,000
2024-01-19$0.91$0.914,400
2024-01-18$0.89$0.8910,100
2024-01-17$0.92$0.921,600
2024-01-16$0.93$0.932,300
2024-01-12$0.94$0.9410,900
2024-01-11$0.90$0.901,300
2024-01-10$0.90$0.909,700
2024-01-09$0.90$0.9022,000
2024-01-08$0.92$0.9210,000
2024-01-05$0.90$0.90600
2024-01-04$0.93$0.9344,600
2024-01-03$0.91$0.911,600
2024-01-02$0.89$0.895,100